<template>
  <div class="cropper-content">
    <div class="cropper-box">
      <div class="cropper">
        <vue-cropper ref="cropper" :img="option.img" :outputSize="option.outputSize" :outputType="option.outputType"
          :info="option.info" :canScale="option.canScale" :autoCrop="option.autoCrop"
          :autoCropWidth="option.autoCropWidth" :autoCropHeight="option.autoCropHeight" :fixed="option.fixed"
          :fixedNumber="option.fixedNumber" :full="option.full" :fixedBox="option.fixedBox" :canMove="option.canMove"
          :canMoveBox="option.canMoveBox" :original="option.original" :centerBox="option.centerBox"
          :height="option.height" :infoTrue="option.infoTrue" :maxImgSize="option.maxImgSize" :enlarge="option.enlarge"
          :mode="option.mode" @realTime="realTime" @imgLoad="imgLoad">
        </vue-cropper>
      </div>
      <!--底部操作工具按钮-->
      <!-- <div class="footer-btn">
        <div class="scope-btn">
          <label class="btn" for="uploads">选择封面</label>
          <input type="file" id="uploads" style="position:absolute; clip:rect(0 0 0 0);" accept="image/png, image/jpeg, image/gif, image/jpg" @change="selectImg($event)">
          <el-button size="mini" type="danger" plain icon="el-icon-zoom-in" @click="changeScale(1)">放大</el-button>
          <el-button size="mini" type="danger" plain icon="el-icon-zoom-out" @click="changeScale(-1)">缩小</el-button>
          <el-button size="mini" type="danger" plain @click="rotateLeft">↺ 左旋转</el-button>
          <el-button size="mini" type="danger" plain @click="rotateRight">↻ 右旋转</el-button>
        </div>
        <div class="upload-btn">
          <el-button size="mini" type="success" @click="uploadImg('blob')">上传封面 <i class="el-icon-upload"></i></el-button>
        </div>
      </div> -->
    </div>
  </div>
</template>

<script>
import { VueCropper } from 'vue-cropper'
import { uploadImg } from '@/api/setting'
import { Toast } from 'vant';
export default {
  name: "CropperImage",
  components: {
    VueCropper
  },
  props: ['Name', 'file'],
  data() {
    return {
      name: this.Name,
      previews: {},
      option: {
        img: '',             //裁剪图片的地址
        outputSize: 1,       //裁剪生成图片的质量(可选0.1 - 1)
        outputType: 'jpeg',  //裁剪生成图片的格式（jpeg || png || webp）
        info: true,          //图片大小信息
        canScale: true,      //图片是否允许滚轮缩放
        autoCrop: true,      //是否默认生成截图框
        autoCropWidth: 200,  //默认生成截图框宽度
        autoCropHeight: 200, //默认生成截图框高度
        fixed: true,         //是否开启截图框宽高固定比例
        fixedNumber: [1, 1], //截图框的宽高比例
        full: false,         //false按原比例裁切图片，不失真
        fixedBox: false,      //固定截图框大小，不允许改变
        canMove: false,      //上传图片是否可以移动
        canMoveBox: true,    //截图框能否拖动
        original: false,     //上传图片按照原始比例渲染
        centerBox: true,    //截图框是否被限制在图片里面
        height: true,        //是否按照设备的dpr 输出等比例图片
        infoTrue: false,     //true为展示真实输出图片宽高，false展示看到的截图框宽高
        maxImgSize: 3000,    //限制图片最大宽度和高度
        enlarge: 1,          //图片根据截图框输出比例倍数
        mode: 'contain',  //图片默认渲染方式
      }
    };
  },
  mounted() {
    this.init();
  },
  methods: {
    //初始化上传的头像图片
    init() {
      //转化为blob
      let reader = new FileReader()
      reader.onload = (e) => {
        let data
        if (typeof e.target.result === 'object') {
          data = window.URL.createObjectURL(new Blob([e.target.result]))
        } else {
          data = e.target.result
        }
        this.option.img = data
      }
      //转化为base64
      reader.readAsDataURL(this.file)
    },
    //初始化函数
    imgLoad(msg) {
      // console.log("工具初始化函数=====" + msg)
    },
    //图片缩放
    changeScale(num) {
      num = num || 1
      this.$refs.cropper.changeScale(num)
    },
    //向左旋转
    rotateLeft() {
      this.$refs.cropper.rotateLeft()
    },
    //向右旋转
    rotateRight() {
      this.$refs.cropper.rotateRight()
    },
    //实时预览函数
    realTime(data) {
      this.previews = data
    },
    //选择图片
    selectImg(e) {
      let file = e.target.files[0]
      if (!/\.(jpg|jpeg|png|JPG|PNG)$/.test(e.target.value)) {
        this.$toast('图片类型要求：jpeg、jpg、png');
        return false
      }
      //转化为blob
      let reader = new FileReader()
      reader.onload = (e) => {
        let data
        if (typeof e.target.result === 'object') {
          data = window.URL.createObjectURL(new Blob([e.target.result]))
        } else {
          data = e.target.result
        }
        this.option.img = data
      }
      //转化为base64
      reader.readAsDataURL(file)
    },
    //上传图片
    uploadImg(type) {
      let _this = this;
      if (type === 'blob') {
        Toast.loading({
          message: '加载中...',
          forbidClick: true,
        });
        //获取截图的blob数据
        this.$refs.cropper.getCropBlob(async (data) => {
          // blob类型转file类型
          let file = new File([data], 'screenshot.png', { type: 'image/jpeg' })

          let formData = new FormData();
          formData.append('file', file);
          formData.append('type', 'avatar'); //上传类型
          //调用上传图片接口
          uploadImg(formData).then(res => {
            _this.$emit('uploadImgSuccess', res.data);
            Toast.clear();
          }).catch(err=>{
            Toast.clear();
          })
          // let { data: res } = await _this.$http.post('/api/file/imgUpload', formData)
          // if (res.code === 200) {
          //   _this.$message({
          //     message: res.msg,
          //     type: "success"
          //   });
          //   let data = res.data.replace('[', '').replace(']', '').split(',');
          //   let imgInfo = {
          //     name: _this.Name,
          //     url: data[0]
          //   };
          //   _this.$emit('uploadImgSuccess', imgInfo);
          // } else {
          //   this.$toast('文件服务异常，请联系管理员！');
          // }
        })
      }
    },
  },
}
</script>

<style scoped lang="scss">
::v-deep .crop-info {
  display: none;
}

::v-deep .cropper-crop-box {
  // position: relative;

  // &::after {
  //   position: absolute;
  //   content: "";
  //   display: block;
  // width: 31px;
  // height: 31px;
  // opacity: 1;
  // border: 5px solid #DD8889;
  //   border-right: 0px;
  //   border-bottom: 0px;
  //   top: -3px;
  //   left: -3px;
  // }

  // &::before {
  //   position: absolute;
  //   content: "";
  //   display: block;
  //   width: 31px;
  //   height: 31px;
  //   opacity: 1;
  //   border: 5px solid #DD8889;
  //   border-left: 0px;
  //   border-bottom: 0px;
  //   top: -3px;
  //   right: -3px;
  //   z-index: 9999;
  // }
}

::v-deep .cropper-view-box {
  outline-color: #FFFFFF !important;

  // &::after  {
  //   position: absolute;
  //   content: "";
  //   display: block;
  //   width: 31px;
  //   height: 31px;
  //   opacity: 1;
  //   border: 5px solid #DD8889;
  //   border-right: 0px;
  //   border-top: 0px;
  //   bottom: -3px;
  //   left: -3px;
  // }

  // &::before  {
  //   position: absolute;
  //   content: "";
  //   display: block;
  //   width: 31px;
  //   height: 31px;
  //   opacity: 1;
  //   border: 5px solid #DD8889;
  //   border-left: 0px;
  //   border-top: 0px;
  //   bottom: -3px;
  //   right: -3px;
  //   z-index: 9999;
  // }
}

.cropper-content {
  display: flex;
  display: -webkit-flex;
  justify-content: flex-end;

  .cropper-box {
    flex: 1;
    width: 100%;

    .cropper {
      width: auto;
      height: 375px;
    }
  }

  .show-preview {
    flex: 1;
    -webkit-flex: 1;
    display: flex;
    display: -webkit-flex;
    justify-content: center;

    .preview {
      overflow: hidden;
      border: 1px solid #67c23a;
      background: #cccccc;
    }
  }
}

.footer-btn {
  margin-top: 30px;
  display: flex;
  display: -webkit-flex;
  justify-content: flex-end;

  .scope-btn {
    display: flex;
    display: -webkit-flex;
    justify-content: space-between;
    padding-right: 10px;
  }

  .upload-btn {
    flex: 1;
    -webkit-flex: 1;
    display: flex;
    display: -webkit-flex;
    justify-content: center;
  }

  .btn {
    outline: none;
    display: inline-block;
    line-height: 1;
    white-space: nowrap;
    cursor: pointer;
    -webkit-appearance: none;
    text-align: center;
    -webkit-box-sizing: border-box;
    box-sizing: border-box;
    outline: 0;
    -webkit-transition: .1s;
    transition: .1s;
    font-weight: 500;
    padding: 8px 15px;
    font-size: 12px;
    border-radius: 3px;
    color: #fff;
    background-color: #409EFF;
    border-color: #409EFF;
    margin-right: 10px;
  }
}

::v-deep .vue-cropper {
  overflow: hidden;
}

::v-deep .point1 {
  width: 20px !important;
  height: 20px !important;
  opacity: 1 !important;
  border: 3px solid #DD8889 !important;
  background-color: #39f0 !important;
  border-radius: 0% !important;
  border-right: 0px !important;
  border-bottom: 0px !important;
  top: -2px !important;
  left: -2px !important;
}

::v-deep .point3 {
  width: 20px !important;
  height: 20px !important;
  opacity: 1 !important;
  border: 3px solid #DD8889 !important;
  background-color: #39f0 !important;
  border-radius: 0% !important;
  border-left: 0px !important;
  border-bottom: 0px !important;
  top: -2px !important;
  right: -2px !important;
}

::v-deep .point6 {
  width: 20px !important;
  height: 20px !important;
  opacity: 1 !important;
  border: 3px solid #DD8889 !important;
  background-color: #39f0 !important;
  border-radius: 0% !important;
  border-right: 0px !important;
  border-top: 0px !important;
  bottom: -1.8px !important;
  left: -2px !important;
}

::v-deep .point8 {
  width: 20px !important;
  height: 20px !important;
  opacity: 1 !important;
  border: 3px solid #DD8889 !important;
  background-color: #39f0 !important;
  border-radius: 0% !important;
  border-left: 0px !important;
  border-top: 0px !important;
  bottom: -1.8px !important;
  right: -2px !important;
}

::v-deep .vue-cropper {
  background-image: none !important;
}
</style>

